import 'dart:isolate';
import 'dart:ui';

import 'package:flutter/material.dart';
import 'dart:async';
import 'package:path_provider/path_provider.dart';
//import 'package:flutter_downloader/flutter_downloader.dart';
import 'package:permission_handler/permission_handler.dart';
import 'dart:io';
import 'FileUtil.dart';
class DownloadUtil{

  ReceivePort _port = ReceivePort();
  String _localPath;





}